It would be really helpful if you could share the diagnostic message found under Roon > Settings > Roon ARC.
Likewise, completing the support template contained in your opening post will assist those helping you. Please include details of your Roon core and all network equipment. Thanks.
This is the error I get and it is not responding well. I went into my router and enabled both UPnP and NAT-PMP and rebooted my router. I have a Lulu dual band ac3100gb router
xwr3150
If i decide to turn off my computer, Roon core would not be detected when i am out and about town .
How do i have access to all my music whenever and always turned on?
I have luxul xwr-3150 router and it supposes DLNA server.
How to attach my usb to my router and turn on roon core 24/7?
I have a usb on my router and assume i can attach the usb with the music folder to my router, but how to make the usb attach to the router or the roon core running 24/7???
Your Roon core and router must both be on 24/7 if you want 24/7 access using Roon ARC. If you don’t want to leave your computer on, you need to install Roon core on a different computer device such as a NUC, Roon Nucleus, or Apple Mac mini.
You can also download some of your local music files to your phone and play those even if your Roon core is not running using Offline mode on your Roon ARC app on the phone.
As @Jim_F says, your core needs to remain on for ARC to work. Likewise, your local library needs be be available, too, unless you’re streaming TIDAL or Qobuz.
I don’t think your mentioned details of your core machine. Many users, including me, use either ROCK or Nucleus, which are designed to be an always-on Roon appliance.